R.O. Water

Water from Reverse Osmosis. Process in which pure water is produced by forcing waste or saline water through a semi-permeable membrane.

Refrigerant

See HFC Refrigerant

Relative Humidity (RH)

The amount of water vapor actually in the air divided by the amount of water vapor the air can hold. Relative humidity is expressed as a percentage and can be computed in a variety of ways. One way is to divide the actual vapor pressure by the saturation vapor pressure and then multiply by 100 to convert to a percent.

RLA

The maximum current a compressor should draw under any operating conditions.